A Question About Step Counter

Hi,

When you jump rope as cardio a lot of steps gets counted as well of course. I wonder if these steps are being considered when counting over all calories that you have burned even if they already have been counted in the cardio session (I know that HR is most important when counting calories in activities)? So are they counted in the cardio session AND over all calories or just one of the two? If they are both counted in the cardio session and over all calories, then it would display that you have burned more calories than you actually have, right?